The infrared alarm is divided into two types: active and passive.The active infrared alarm is to actively emit infrared the alarm. When the infrared rays meet the obstacles, they will rebound back and receive the probe of the alarm.
Installation of infrared alarms
Put the alarm host in a fixed position, hang the alarm probe in about 2 meters high, and tilt it forward and down to obtain high sensitivity.After connecting the power, after about 1 minute delay, the alarm enter the alert state. At this time, if anyone enters the monitoring area, call the police immediately.The alarm is about 1 minute and stops automatically.Then again in a state of warning.
Infrared alarm repair
Frequently problem solutions for infrared alarm maintenance is to install the infrared detectors according to the relevant materials and other related materials; the second step is that we need to avoid temperature differences and air convection in some places with relatively strong air convection when installing the alarm.The third is to pay attention to closing the doors and windows related to the prevention area, and ensure that the detector can open normal;
Infrared alarm price
Principles of infrared alarm
The principle of infrared alarm uses the infrared ray to transmit diodes via LED infrared light, and then focuses on the optical mirror surface to make the light to a long distance, accepted by the photographer.Alerts are issued when the light is blocked.

Related tags： Houseware